广播电视英语短句 第 91 课：心血管疾病-1

Cardiovascular disease is the world's leading cause of death. It includes heart attack, stroke and high blood pressure. 心血管疾病是世界首要的致死原因，它包括心脏病发作、中风和高血压。

Over the years, researchers have identified several substances in the blood that can serve as what they call cardiac biomarkers. 多年来，研究人员发现血液中的一些物质能够发挥他们称之为心脏病生物标记物的作用。

These are used to measure the presence and development of cardiovascular disease. 这些物质被用来检测心血管疾病的出现和发展。

Researchers have increasingly tried to use these biomarkers to identify people who are at high risk of developing heart disease. 研究人员越来越多地尝试使用这些生物标记物来识别那些可能罹患心脏病的高危人群。

But a new study has found that they offer little help in this way. 但是一项新的研究发现，这种方法并没有起到多大用处。